I recently got an iPad Air 2, a upgrade from an earlier iPad. On that earlier iPad I could record my voice using a headset that had its own built in mic. It plugged into the 3.5 mm jack. Plugging it in like that disabled the iPad's built in mic, which was exactly how I expected it to work. On this Air 2 that doesn't work. Even though I can listen through the headset, I can't record through it on this device. It only lets me record through the built in mic, even with the headset plugged in. I was wondering if that's normal as-designed for this model, or if it's defective and I should try to exchange it. Same headset, as well as several other headsets, all work on the older device.